Question

What does it mean when they say the plasma membrane is selectively permeable ?

Answer 1

Answer: ONLY CERTAIN SUBSTANCES CAN PASS THROUGH IT

Step-by-step explanation:

1 only gases and water can pass through it.

2 substances need permission to pass through it.

3 only certain substances can pass through it.

4 substances need carrier molecules to pass through it.

5 ATP is always needed to move molecules across the plasma membrane.

Answer 2

Answer: Plasma membranes are selectively permeable (or semi-permeable), meaning that only certain molecules can pass through them. Water, oxygen, and carbon dioxide can easily travel through the membrane.

Explanation: your welcome :)